Screen insert for storm windows



May 26, 1953 w. M. KRANTZ SCREEN INSERT FOR STORM WINDOWS Filed March 10, 1947 3nv entor [Va/fer M Ira /77 (Ittomeg Patented May 26, 1953 UNITED STATES PATENT OFFICE SCREEN INSERT FOR STORM WINDOWS Walter M. Krantz, Youngstown, Ohio Application March 10, 1947, Serial No. 733,688

3 Claims.

This invention relates to storm windows and more particularly to screen sash type inserts therefor.

The principal object of the invention is the provision of an efficient and inexpensive screen sash type insert for storm windows.

A further object of the invention is the pro-' vision of a framing section in corner piece construction for forming screen sash type inserts for storm windows.

A still further object of the invention is the provision of a novel means of mounting a section of screen in a frame to form a sash type insert for storm windows.

A still further object of the invention is the provision of a novel corner piece construction and registering framing section for forming sash-like frames for storm windows and storm window screened inserts.

The present invention relates to storm windows and more particularly to the interchangeable inserts employed therein and still more particularly to the screened sash type inserts substituted for glazed type inserts in storm window constructions for summer or warm weather use. It is well known that many and various types of combination windows are employed for storm window and screen purposes on dwelling house window openings. It is also known that such combination storm window constructions usually comprise a main frame mounted in or on the dwelling house window opening and two glazed, removable sash type inserts for registry with the said frame to form a storm window and one interchangeable screened sash type insert which may be substituted for either one of the glazed sash type units used so as to provide screened ventilation when the dwelling house window is open. The present invention relates to an improved screen sash construction as used in such combination storm windows. I

With the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

The invention is illustrated in the accompanying drawing, wherein:

Figure 1 is a front view of a screen sash type insert for a storm window.

Figure 2 is a horizontal cross section taken on line 2--2 of Figure 1.

Figure 3 is a perspective view of a corner piece employed in forming the sash type insert shown in Figure 1.

Figure 4 is an enlarged cross section of the framing material section employed in forming the sash type screen insert'shown in Figures 1 and 2.

In the following specification and claims, the terms inner and outer, and derivatives there of, will be used to denote directions toward and away from the geometric center of a screen sash formed by the frame elements of the present invention. These terms are used for reference only and will have no limiting significance.

By referring to the drawings and Figures 1 and 2 in particular it will be seen that a screened insert for a storm window has been disclosed and comprises four out and mitered sections of framing material generally indicated by the numeral Ill. The framing section, as is also disclosed in enlarged detail in Figure 4 of the drawings, includes a surface flange indicated by the numeral. l I and a downturned and outturned flange l2 and a secondary downturned and outturned flange l3. The surface flange is provided with a continuous downturned end I4 which is opposite the end of the secondary downturned and outturned flange [3. The inner surface of the surface flange H and that of the secondary downturned and outturned flange 13 form an area for the reception of a corner piece I5 such as illustrated in enlarged detail in Figure 3 of the drawings.

By referring to Figure 3 of the drawings it will be observed that the cross section or end section of the corner piece [5 conforms in size and shape to the channel defined by the inner surfaces of the surface flange H and the secondary downturned and outturned flange l3 and which channel is indicated in Figure 4 of the drawings by the numeral It.

By again referring to Figure 3 of the drawings the L-shaped corner piece !5 will be seen to include a recess portion I! along one of its edges, which recess portion ll, in the assembled storm window frame, provides for registry with and accommodation of the downturned end IQ of the inner side of the surface flange ll. Thus, the corner pieces l5 are locked in position in the framing section III, as shown in Figure 2, by the slight distortion of the framing section is when the corner pieces I5 are positioned therein. Thus the downturned end sections M of the framing 3 section In snap over the main body portion of the corner piece I5 and into the recess ll.

It will thus be seen that a frame such as the square sash type insert frame shown in Fi ure 1 of the drawings can be readily formed from four out and mitered sections of the framing section ill by the use of four of the L-shaped corner pieces I 5 and that their positioning in the channel I6 of the framing section automatically locks the corner pieces IS in place and the four framing sections It together. This locking action is further insured by the provision on the corner pieces l5 of serrated sections I8 into which the secondary downturned and outturned flange E3 of the framing section It may be forcibly distorted as by striking the same with a tool to move a portion thereof into the serrations $8. This" is an optional locking feature and under normal conditions is not essential formaintaining the frame in position but is desirablewhen the sashdike frame is subject to considerable handling.

In order that a section of screen material, such as indicated in the drawings by the numeral it, may be carried by the frame formed or the frarri ing section Ill and the corner pieces i5, ase'condary channel in the framing section it is employed. The channel 2!} is formed by the downturned and outtu'rned flange l2 as opposed by the secondary downturned and outturned flange it. A number of continuous serrations 2d are formed in one of the members defining the channel ilil, as best illustrated in Figure 4 of the drawings. By careful attention to Figure 4% it will be noted that a plane defined by the peaks or said serration is arranged at a diverging angle with re spect to both the side of the groove 22! immediately adjacent thereto and with respect also to the opposite side of said groove 28. As also appearing in Figure 4 of the drawing, the intersection of the said serrated portion with the sur face [3 of the frame element is spaced from the plane of surface 26 projected a distance approximately equal to the projection of the ridge 23 beyond the surface 25; The purpose of this construction will appear hereinafter.

By referring to Figure 2 of the drawings it will be seen that the edges of the screen 19 are positioned in the channel 29' and are held therein by appropriately cut and mitered tubular sec tions of relatively soft material as indicated in the drawings by the numeral 22. The tubular sections '22 are preferably formed of lead or some similar material which is easily deformed. It will be seen that when the cut and mitered section 22 is positioned therein and flattened as by bringing pressure to bear on the exposed portion thereof, it will distort into an oval shape incross section and thereby hold the screen edges firmly in position. This holding action is further enhanced by the formation on the inner surface of the downturne'd and outturned flange ii. of a continuous bead 23 and the tubular member 22 is held by its engagement with the continuous serrations 2| on the opposite surface of the framing member.

The slanting surface presented by the peaks of the serrations 2! permit the entry of the tube 22 readily past the ridge 23 and will then lift it into the pocket formed behind said ridge for the snug engagement of the screen cloth therein. Inasmuch as the projection of the ridge 23 from the surface 25 is approximately equal to therecessing of the outer edge of the serrated portion from the projected plane of the surface 2'5, the tubular spline 22 will not be materially com pressed as it passes said ridge 23 and henceit will follow the channel provided for it smoothly and will engage the serrations adjacent its point of ultimate rest firmly and without tendency to ward looseness. Further, such entry will be smooth and will not require initial compression as the spline passes the ridge 23 and subsequent re-expansion as it approaches its position of final seating.

It will thus be seen that a simple and practical screeri sash type insert for storm windows has been disclosed which may be readily and inexpensively formed of four out and mitered sections of the framing section Hi, four of the corner pieces It, the section of screen l9 and four cut'and mitered sections of the tubular material 22. It will also be seen that in assembly the sash type insert is attractive in appearance and light in weight and it may, therefore, be adv-antageously employed for its purpose in combination storm window constructions.

Having thus described my invention, what I claim is:

1. Means for edge mounting panels of screen material, said means comprising a framing member having a channel formed therein, said channel having a rib partially overhanging one side thereof, a plurality of axiall extending serrations formed in the opposite side thereof and a longitudinally extending groove in the said channel and at one side thereof, the edges of the screen positioned in the said channel and groove and a distortable tubular member positioned in the said channel so as to position the screen beneath the overhanging edge and be held by the said serrations.

2. Screen sash structure including an e1ongated frame element comprising in combination: means defining a sidewardly opening groove in said frame element; a surface extending inwardly from the inward side of said groove for supporting said screen; an outwardly extending ridge projecting from an inward wall of said groove; the inward and at least a portion of the outward walls of said groove being parallel with each other and said walls being substantially perpendicular to the plane of said screen supporting surface, and a portion of the outward wall of said groove being provided with longitudinally arranged serrations and the peaks of said serrations defining a plane diverging away from the plane of the inward wall.

3. The structure defined in claim 1 wherein the extension of the ridge beyond said inward face is approximately equal to the recession of said serrated portion at the point directly opposite said ridge from the plane "of the said outer wall extended.

WALTER M. KRANTZ.

References Cited in the fil'e of this patent UNITED STATES PATENTS Number Name Date 956,239 Watson Apr. 26, 191-0 1,248,858 Higgin Dec. 4, 1917 1,772,780 Milone Aug. 1 2, .1930 2,101,349 Sharp Dec. '7, 1937 2,335,361 Schiller o- Nov. -30, 1943 

